The results of a survey (sample) of 500 households for the number of TVs per household, is shown below. x(# of TV) o 20 150 2 200 3 130 (a) Find the mean of the frequency distribution. The Meanis Select) (b) Find the standard deviation of the distribution. The standard deviation is Select) c) If you were to pick one household, what is the probability that they have exactly 1 TV? Probability is Select) (d) If you were to visit 20 households, how many would you expect have exactly 1 TV? Approximately [Select) households. (e) If you were to pick one household, what is the probability that they have at least 1 TV? The probability is Select